An agglomeration of things is a lot of different things gathered together, often in no particular order or arrangement.
例句
The towns are on the way to becoming agglomerations of desperately poor people...這些城市正逐漸變為極度貧窮之人的聚居地。The album is a bizarre agglomeration of styles.這張專輯不同尋常地集各種風格于一體。